If it is the door to the bridge you should be able to interact with it on the great bridge saying closed at least he is correct.
Cathedral workshop locked door.
The mystery of the locked door at the bottom of the cathedral ward in bloodborne has been solved bloodborne like earlier from software games is filled with doors that don t open the first time.
It s the door leading to the great bridge where you fought cleric beast.
This feature is not available right now.
With the key you can return to the top of healing church workshop and open the previously locked gate.
The healing church workshop is a large tower which spirals up leading to a locked door leading to upper cathedral ward and a chest containing one of the hunter badges.
On the balcony you can take the frenzied coldblood walk inside two enemies and then jump to the locked cage at the bottom.
I said the same thing four posts in to this thread.
Near the body you will find key to upper cathedral and from the inside you will easily open the gate.
That door doesn t open.
After beating blood starved beast go back to cathedral ward up the elevator across the bridge with the wheelchair snipers and go all the way to the top of that tower.
For whatever reason from disabled it.